Chrome is MacOS X but cheaper
The difference between Mac and Windows is the UI. Right? And Google is making great in-roads with its highly usable web-UI's, right?
So, Chrome steps in between them in terms of common usability, but it will be cheaper than both of them. A recipe for great success.
(Exactly what BrandX-Linux wanted, but didn't have the cohonis or the UI)
But Chrome is really just a natural progression for Android; like Apple's iPhone is a cut down OS X and both built from common code, Chrome and Android will be similarly grown but in reverse. Dont make the mistake of thinking that a phone is any less of a full computer, albeit physically smaller (Yoda, Luke, X-wing? ...swamp??!!!)
Whether its built on a flavour of Linux, Windows-kernal, Symbian, Beos, DOS or TOS, its the UI that makes it. No-one says Mac OS is just another Linux. The foundation layer of the OS is irrelevant to the users who are buying a mostly-internet-only appliance.
The OS war is fought on the kernel level at server farms; the desktop-ui level at (professional) work; and the web-ui level for more work, rest and play.
It seems if you can get a foothold at the desktop level, you have a window (sorry) of opportunity to push your web-ui.
MS tried it with IE, and is loosing. Adobe eventually realised Flash was just as popular and more capable than the browser. Then MS saw this and thought it better to start a fresh fight with Silverlight - Google and Apple continue with HTML 5.
(Java - who failed you so badly? Oh another bunch of programmers thinking the UI was not important)
"...but all I want is email and a spreadsheet!"